QUARTERLY DATA (UNAUDITED) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
QUARTERLY DATA (UNAUDITED)
Net Sales	$ 571,437	$ 589,598	$ 577,503	$ 592,498	$ 544,540	$ 601,196	$ 614,929	$ 576,518	$ 2,331,036	$ 2,337,183	$ 2,076,719
Gross profit	144,391	148,214	154,998	159,223	143,224	161,109	171,568	160,948	606,826	636,849
Net Income	34,854	42,101	41,652	43,813	38,632	49,243	51,287	44,468	162,420	183,630	173,589
Net Income Attributable to AptarGroup, Inc.	$ 34,990	$ 42,127	$ 41,686	$ 43,809	$ 38,620	$ 49,297	$ 51,289	$ 44,477	$ 162,612	$ 183,683	$ 173,481
Net Income Attributable to AptarGroup, Inc. Per Common Share:
Basic (in dollars per share)	$ 0.53	$ 0.63	$ 0.63	$ 0.66	$ 0.59	$ 0.74	$ 0.77	$ 0.66	$ 2.45	$ 2.76	$ 2.58
Diluted (in dollars per share)	$ 0.52	$ 0.62	$ 0.61	$ 0.64	$ 0.57	$ 0.72	$ 0.74	$ 0.64	$ 2.38	$ 2.65	$ 2.48
Dividends declared (in dollars per share)	$ 0.22	$ 0.22	$ 0.22	$ 0.22	$ 0.22	$ 0.22	$ 0.18	$ 0.18	$ 0.88	$ 0.80
Stock price high (in dollars per share)	$ 53.36	$ 53.19	$ 55.49	$ 55.00	$ 52.87	$ 54.66	$ 53.80	$ 50.19	$ 55.49	$ 54.66
Stock price low (in dollars per share)	$ 45.19	$ 47.56	$ 49.36	$ 51.01	$ 41.98	$ 44.66	$ 48.85	$ 46.50	$ 45.19	$ 41.98
Average number of shares outstanding:
Basic (in shares)	66,249	66,541	66,580	66,196	65,976	66,381	66,939	66,926	66,392	66,553	67,344
Diluted (in shares)	67,846	68,353	68,758	68,785	68,159	68,677	69,438	69,914	68,395	69,274	69,815